Willaed h



(No Model.)

- W. H. FULLER.

MAGNESIUM LIGHT.

Patented July 31, 1888.

UNITED STATES PATENT CEFIcE.

WILLARD H. FULLER, OF PASSAIC, NEW JERSEY, ASSIGNOR TO THE SCOVILLMANUFACTURING COMPANY, OF NEW YORK, N. Y.

MAGNESIUM LIGHT.

SPECIFICATION forming part of Letters Patent No. 386,875, dated July 31,1888.

Application filed October 31, 1887. Serial No. 253,820. (No model.)

To all whom it may concern:

Be it known that I, WILLARD H. FULLER, of Passaic, in the county ofPassaic and State of New Jersey, haveinventeda certain new and usefulImprovement in Magnesium Lights, of which the following is aspecification.

My improvement relates more particularly to magnesium lights for use inphotography. I will describe the improvement in detail, and then pointout the novel features in claims.

In the accompanying drawings, Figure 1 is a perspective view of a deviceembodying my improvement and a cover therefor, shown in dotted outline.Fig. 2 is a vertical section of the same, taken on the plane of thedotted line a; m, Fig. 1. Fig. 3 is a' similar sectional view showing amodification.

Similar letters of reference designate corresponding parts in all thefigures.

Referring to Figs. 1 and 2, A designates a case or shell. It is shown ascnpshaped or having an open top. It may be made of metal, wood, paper,or other suitable material. A cover, A, for the case or shell may beemployed. I have illustrated a cover therefor in dotted outline in Fig.1.

B designates gun-cotton contained within the case or shell A. Combinedwith the guncotton is magnesium. The magnesium may be thus combined byplacing it upon the top of the gun-cotton, or it may be mixed with thegun-cotton. I have found suitable proportions of these materials to betwenty grains of gun-cotton to fifteen grains of magnesium; but I do notwish to be limited to these pro.- portions.

Outside the gun-cotton and magnesium I apply a coating of collodion orequivalent material. The collodion may entirely surround the gun-cottonand magnesium, or it may, if desirable, be applied to the top portionthereof only. I have illustrated the collodion on a somewhat exaggeratedscale at a as entirely surrounding the gun-cotton and magnesium.

Combined with the gnn-cotton and magnesium is a fuse, C. This fuse maybe of the usual or any desired kind, and may be arranged in any suitablerelation to the gun-cotton and magnesium. As here shown it is embeddedfor a distance in the gun cotton and magnesium at about the center ofthe latter, and extends partly beyond the same into a convenientposition to be lighted. I do not deem it wholly essential, however, tousea fuse.

If desirable, the bottom of the case or shell may be weighted or madeheavier than the balance in order that if the device should be thrown ordropped it would readily assume an upright position. The case or shellnot only serves to retain the contents but protects an object upon whichit may rest from fire when the magnesium and gun-cotton are ignited.

In Fig. 3 I have shown the gun-cotton and magnesium as surroundedentirely by a coating of collodion or equivalent material. In this casethe collodion itself constitutes the case or shell. This form of thedevice can be used to ad vantage under certain circumstances. This lightis intended for use in photographing objects at night or in dark places.It emits a sudden and very powerful light, sufficient for the purposespecified. It is compact and inexpensive and may be conveniently carriedabout the person.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, with a case or shell, of gun-cotton and magnesiumcontained therein, and a coating of collodiou or equivalent materialoutside the gun-cotton and magnesium, substantially as specified.

2. The combination, with a case or shell, of gun-cotton and magnesiumcontained therein, a coating of collodion or equivalent material outsidethe gun-cotton and magnesium, and a fuse, substantially as specified.

3. The combination, with a case or shell, of gun-cotton and magnesiumcontained therein, a coating of collodion or equivalent materialentirely surrounding the gun-cotton and magnesium, and a fuse,substantially as specified.

4. The combination, with acase or shell weighted at the bottom, of gun-cotton and magnesium contained therein, a coating of collodion orequivalent material outside the gun cotton and magnesium, and afusehaving a portion embedded in the mass of gun-cotton and magnesium and aportion extending above the surface thereof, substantially as specified.

WILLARD H. FULLER.

Witnesses:

H. LITTLEJOHN, H. 1?. SEE, Jr.

